One-Pot Cyclization of 2-Aminophenethyl Alcohols: A Novel and Direct Approach to the Synthesis of <i>N</i>-Acyl Indolines
作者:Zengxue Wang、Wen Wan、Haizhen Jiang、Jian Hao
DOI:10.1021/jo701566v
日期:2007.11.1
[Graphics]A unique one-pot cyclization of 2-aminophenethyl alcohols with carboxylic acids in the presence of PPh3, CCl4, and NEt3 furnished the formation of N-acyl indolines in good to excellent yields. This new approach provides an efficient, scalable, low-cost, and direct access to the biologically important indolines which are further oxidizable to indoles and oxindoles.
Lewis Base‐Boryl Radicals Promoted Selective Mono‐ and Di‐ Hydrodechlorination of Trichloroacetamides and Acetates
作者:Ming‐Cheng Bo、Yee Lin Phang、Qiang Zhao、Feng‐Lian Zhang、Yi‐Feng Wang
DOI:10.1002/ejoc.202301189
日期:2024.3.18
and N-heterocyclic carbene (NHC)-boryl radicals were found to promote selective mono- or dihydrodechlorination of trichloroacetamides and acetates upon treatment with dilauroyl peroxide (DLP) as radical initiator and thiophenol as polarity reversal catalyst. Substituting the hydrogen atom donor, i. e. Lewis base-borane, to its deuterated counterparts promoted mono- or dideuterodechlorination instead